Update SupplyChainGuardian.yaml

Author: barbaria888

.github/workflows/SupplyChainGuardian.yaml

@@ -2,8 +2,6 @@ name: Supply Chain Guardian
 on:
   push:
     branches: [main]
-  schedule:
-    - cron: '0 2 * * *'  # Nightly CVE check
 
 permissions:
   contents: write